<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue组件数据注入</title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    <style>
        * {
            
        }
    </style>
</head>
<body>
    <div id="Application">
        <my-list :count="5">
        </my-list>
    </div>
    <script>
        const App = Vue.createApp({})
        const listCom = {
            props:{   
                count: Number
            },
            provide(){
                return {
                    listCount:this.count
                }
            },
            template:`
                <div style="border:red solid 10px;">
                    <my-item v-for="i in this.count" :index="i"></my-item>
                </div>
            `
        }
        const itemCom = {
            props: {
                index:Number
            },
            template:`
                <div style="border:blue solid 10px;"><my-label :index="this.index"></my-label></div>
            `
        }
        const labelCom = {
            props: {
                index:Number
            },
            inject:['listCount'],
            template:`
                <div>{{index}}/{{this.listCount}}</div>
            `
        }
        App.component("my-list", listCom)
        App.component("my-item", itemCom)
        App.component("my-label", labelCom)
        App.mount("#Application") 
    </script>
</body>
</html>